a)
applying v2=u2+2gS
v2=25+2×10×3=95v=9.75m/s
b)
if the trampoline behaves like a spring then the depression in the spring in the spring will create potential energy
so applying energy conservation
21mv2=21kx2
65×(9.75)2=6.2×104×x2
x=31.56×10−2m
x=31.56cm
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